please someone help me out

my ipod touch wont turn back on i jail broke it. Then i tryed to restore it But i jsut get errors. I cant turn the ipod on. then i try to restore it the sceen jsut gose black. can anyone please help me out

i have not tryed your video yet but every time i restore my ipod it gets going But right then it starts to restore it turns off and my computer is still tryin too but the ipod is off. then i get a error plesae sir help me i just got this ipod too

Okay open iTunes.
Plug in your iPod.
Click the power-button( one on the top of the iPod).
Apple logo appears.
Click and hold the power-button and the home-button ( the only other button on the iPod).
Ipod turns off.
Quickly let go of the power-button, but still hold the home-button.
Ipod screen should be blank/off.
Itunes should recognize it in recovery after like a minute.
Now restore.